10210020121 has 32 divisors (see below), whose sum is σ = 12068130816. Its totient is φ = 8456400000.

The previous prime is 10210020113. The next prime is 10210020181. The reversal of 10210020121 is 12102001201.

It is a cyclic number.

It is not a de Polignac number, because 10210020121 - 2³ = 10210020113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10210020098 and 10210020107.

It is not an unprimeable number, because it can be changed into a prime (10210020181) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19521766 + ... + 19522288.

It is an arithmetic number, because the mean of its divisors is an integer number (377129088).

Almost surely, 2^10210020121 is an apocalyptic number.

It is an amenable number.

10210020121 is a deficient number, since it is larger than the sum of its proper divisors (1858110695).

10210020121 is a wasteful number, since it uses less digits than its factorization.

10210020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 10210020121 its reverse (12102001201), we get a palindrome (22312021322).

It can be divided in two parts, 102100 and 20121, that added together give a palindrome (122221).

The spelling of 10210020121 in words is "ten billion, two hundred ten million, twenty thousand, one hundred twenty-one".